Chlorophyll Fluorescence Transient Analysis in Alternanthera tenella Colla Plants Grown in Nutrient Solution with Different Concentrations of Copper

Cuchiara, Cristina Copstein; Silva, Ilda Mariclei C.; Martinazzo, Emanuela Garbin; Braga, Eugênia Jacira Bolacel; Bacarin, Marcos Antônio; Peters, José Antônio

doi:10.5539/jas.v5n8p8

Cited by 7 publications

(5 citation statements)

References 29 publications

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“…Finally, the sharp decrease in the PI ABS viability index, confirms the inhibitory effect on photochemical processes in Cu-treated plants [58] (Figure 12A). Our results are in line with the literature reporting the effects of copper on different plant species [59][60][61]. Nevertheless, it should be emphasized that the copper concentrations used in this study are notably higher than those usually utilized in similar experiments.…”

Section: Days After Contaminationsupporting

confidence: 93%

Effect of Different Copper Levels on Growth and Morpho-Physiological Parameters in Giant Reed (Arundo donax L.) in Semi-Hydroponic Mesocosm Experiment

Pietrini

Carnevale

Beni

et al. 2019

Water

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In Mediterranean countries, the use of copper-based fungicides in agriculture is causing a concerning accumulation of copper in the upper layer (0–20 cm) of soils and water bodies. Phytoremediation by energy crops offers the chance to associate the recovering of polluted environments with the production of biomass for bioenergy purposes. The purpose of this work was to evaluate the morpho-physiological response of giant reed (Arundo donax L.), a well-known energy crop, when treated with increasing concentrations of Cu (0, 150, and 300 ppm) in a semi-hydroponic growing system (mesocosm) for one month. The plant morphology (height and base diameter of the stem, number of stems) was not affected by the treatments. The presence of Cu led to the disequilibrium of Fe and Zn foliar concentration and caused an impairment of photosynthetic parameters: at 150 and 300 ppm the chlorophyll content and the ETR were significantly lower than the control. The study demonstrated that, although the presence of Cu may initially affect the plant physiology, the Arundo plants can tolerate up to 300 ppm of Cu without any adverse effect on biomass production, even when grown in semi-hydroponic conditions.

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Section: Days After Contaminationsupporting

confidence: 93%

Effect of Different Copper Levels on Growth and Morpho-Physiological Parameters in Giant Reed (Arundo donax L.) in Semi-Hydroponic Mesocosm Experiment

Pietrini

Carnevale

Beni

et al. 2019

Water

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“…(Figure 1a). Similar results were found for magnesium deficiency in Citrus species and excess iron in sweet potatoes (Adamski et al, 2011), but no Land K-bands appeared in Alternanthera tenella when using excess copper (Cuchiara et al, 2013).…”

Section: Modulated Fluorescencesupporting

confidence: 81%

Chlorophyll a fluorescence in sweet potatoes under different copper concentrations

Cuchiara

Silva

Dalberto

et al. 2015

J. Soil Sci. Plant Nutr.

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Photosynthesis is one of the main plant metabolic processes affected by copper deficiency and toxicity. The objective of this study was to evaluate the effects of different copper concentrations on transient chlorophyll a fluorescence and modulated fluorescence in sweet potatoes. Sweet potatoes were placed in a hydroponic system and grown for six days with a complete nutrient solution. The plants were then transferred to solutions with different copper concentrations (0.041, 0.082, 0.123 and 0.164 mM) for nine days. The solutions were renewed every three days, and the plants were evaluated at the end of the experiment. Increased copper availability (0.123 and 0.164 mM) positively influenced the structure and functionality of photosystem I (PSI). The increase in Cu availability also reduced the apparent electron transport rate in the PSII [ETR(II)], and the plants treated with 0.082 and 0.123 mM Cu were able to dissipate the excess light energy in the PSII and protect its units (NPQ and qN). A joint analysis of the data shows that high copper concentrations in the nutrient solution lead to reduced photochemical activity of the PSII, increased dissipation of light energy from this same photosystem and increased PSI efficiency in sweet potatoes.

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“…For example, it has been applied for the evaluation of plant performance under conditions of light [ 35 ], chilling [ 36 , 37 ], high temperature [ 38 , 39 , 40 ], and drought [ 41 , 42 , 43 , 44 ] stress. More recently, the JIP test was also applied to evaluate the photosynthetic performance of plants exposed to different metals [ 45 , 46 , 47 , 48 ]. Unfortunately, until now, the JIP-test information published for plants exposed to excess Zn is very scant.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Metals on Photosynthesis: Cadmium and Zinc Affect Chlorophyll Fluorescence in Durum Wheat

Paunov

Koleva

Vassilev

et al. 2018

IJMS

271

125

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A comparative study of the effects of exposure to high Cd2+ (50 µM) and excess Zn2+ (600 µM) on photosynthetic performance of hydroponically-grown durum wheat seedlings was performed. At day 8, Cd and Zn were added to the nutrient solution. After 7-days exposure, the chosen concentrations of both metals resulted in similar relative growth rate (RGR) inhibitions of about 50% and comparable retardations of the CO2 assimilation rates (about 30%) in the second developed leaf of wheat seedlings. Analysis of chlorophyll a fluorescence indicated that both metals disturbed photosynthetic electron transport processes which led to a 4- to 5-fold suppression of the efficiency of energy transformation in Photosystem II. Non-specific toxic effects of Cd and Zn, which prevailed, were an inactivation of part of Photosystem II reaction centres and their transformation into excitation quenching forms as well as disturbed electron transport in the oxygen-evolving complex. The specificity of the Cd and Zn modes of action was mainly expressed in the intensity of the toxicity effects: despite the similar inhibitions of the CO2 assimilation rates, the wheat photochemistry showed much more sensitivity to Cd than to Zn exposure.

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Chlorophyll Fluorescence Transient Analysis in Alternanthera tenella Colla Plants Grown in Nutrient Solution with Different Concentrations of Copper

Cited by 7 publications

References 29 publications

Effect of Different Copper Levels on Growth and Morpho-Physiological Parameters in Giant Reed (Arundo donax L.) in Semi-Hydroponic Mesocosm Experiment

Effect of Different Copper Levels on Growth and Morpho-Physiological Parameters in Giant Reed (Arundo donax L.) in Semi-Hydroponic Mesocosm Experiment

Chlorophyll a fluorescence in sweet potatoes under different copper concentrations

Effects of Different Metals on Photosynthesis: Cadmium and Zinc Affect Chlorophyll Fluorescence in Durum Wheat

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